I don't know how you are caring for your dessicant, but if your house is humid, you have to constantly renew the dessicant. Your "dry box" is not hermetic and lets humidity enter easily._________________Lou Jost
www.ecomingafoundation.wordpress.comwww.loujost.com

In tropical countries we usually build dry boxes that are not tightly sealed and do not contain dessicant, but we heat them with a low-wattage incandescent bulb. This keeps the RH low and that is what you need in order to prevent fungus._________________Lou Jost
www.ecomingafoundation.wordpress.comwww.loujost.com

It's the relative humidity that matters for fungi and mold. Cold air holds less water than warm air. If you put warm moist air in a closed container, and the temperature drops, the relative humidity goes up and could even reach 100%, causing condensation, because the cold air can't hold as much water as hot air._________________Lou Jost
www.ecomingafoundation.wordpress.comwww.loujost.com

If you choose the hermetic route, you generally need something that really seals air-tight, preferably with a rubber seal. Pelican cases work, though you need to make sure the pressure equalization hole is closed._________________Lou Jost
www.ecomingafoundation.wordpress.comwww.loujost.com

It may be more efficient to dehumidify an entire room.
I use a 60 Litre/day Danby dehumidifier which keeps my large basement at 40% even in the most humid weather (have to keep door and windows closed). My cameras, microscopes and bug collection in the same room._________________NU.
student of entomology
Quote – Holmes on ‘Entomology’
” I suppose you are an entomologist ? “
” Not quite so ambitious as that, sir. I should like to put my eyes on the individual entitled to that name.
No man can be truly called an entomologist,
sir; the subject is too vast for any single human intelligence to grasp.”
Oliver Wendell Holmes, Sr
The Poet at the Breakfast Table.

Think "airing cupboard".
With combi boilers, fewer houses in the UK have them.
Homebrew suppliers have low powered heating plates, and lizard-house heating pads start from just a few watts._________________Chris R

Think "airing cupboard".
With combi boilers, fewer houses in the UK have them.
Homebrew suppliers have low powered heating plates, and lizard-house heating pads start from just a few watts.

wouldnt a airing cupboard be high humidity?

I think I'm just going to get a more airtight box and see if that helps, the percentage as dropped to 64% now however it is unusually hot right now so maybe once the temperature drops I won't have an issue.

No, the airing cuboard (traditionally housing a hot water storage cylinder providing heat) has warm air which holds more vapour in the air, so moisture comes out of your towels and cameras, into the air, and is carried away.
So, a cardboard box wouldn't come out soggy, it would be dry._________________Chris R

No, the airing cuboard (traditionally housing a hot water storage cylinder providing heat) has warm air which holds more vapour in the air, so moisture comes out of your towels and cameras, into the air, and is carried away.
So, a cardboard box wouldn't come out soggy, it would be dry.

Oh right.
So maybe if I stuck my gear in a cabinet and put a couple of low watt bulbs in there they may have the same effect?